MYSTIC — Clean Up Sound and Harbors will sponsor a workshop, “From the Ground to the Sound: Earth-Friendly Landscaping for Cleaner Water,” with Michael Nadeau, at the Mystic Art Center, 9 Water St., on March 25 from 7 to 8:30 p.m.

Nadeau will speak about creating rain gardens, coastal buffers and garden techniques that create beautiful landscapes while protecting area waters from pollutants carried by rainwater runoff.

The event is free and open to the public. Call 860-961-7283 for more information.